I think they have spent upwards of $2 million so far on this trial
I wonder how much the city of Phoenix has made from all the news people, etc., who've swooped into town like vultures to cover the trial. The trial has attracted media from around the world, so you figure there've been hundreds, maybe thousands of people staying at hotels, eating at restaurants, drinking at bars and so forth. It'd be interesting to see how it all tallies up.
Anyway, regarding the trial: murder one/death sentence/appeals/possible retrial—I'm betting that's how things will play out.